/*--------------*/
/* Ja74.java    */
/*--------------*/
/*-----------------------------------------*/
/*  ラジオボタンの設定は本書では説明省略   */
/*-----------------------------------------*/
import java.applet.Applet;
import java.awt.*;                            //BorderLayout,GraphicsConfiguration,event
import javax.media.j3d.*;                     //Java3d
import com.sun.j3d.utils.applet.MainFrame;    //MainFrame
import com.sun.j3d.utils.universe.*;          //SimpleUniverse
import com.sun.j3d.utils.geometry.*;          //Primitive
import com.sun.j3d.utils.behaviors.mouse.*;   //Mouse
import com.sun.j3d.utils.image.TextureLoader; //TextureLoader
import javax.vecmath.*;                       //Point3f,Color3f
import java.awt.event.*;                      //Checkbox

public class Ja74 extends Applet implements ItemListener{

    private SimpleUniverse simpleU;
    private BoundingSphere bounds = new BoundingSphere(new Point3d(), 10.0);
    TextureAttributes texAttrib;
    //ラジオボタン-------
    CheckboxGroup radio;
    Checkbox radio1, radio2, radio3, radio4;

    public void init() {

        //アプレットの中央にCanvas3Dを追加
        setLayout(new BorderLayout());
        Canvas3D canvas = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
        add(canvas, BorderLayout.CENTER);

        //シーングラフの生成
        simpleU = new SimpleUniverse(canvas);
        simpleU.getViewingPlatform().setNominalViewingTransform();

        //シーングラフの作成
        simpleU.addBranchGraph(createSceneGraph());

        //GUIの作成
        createGUI();
    }

    public BranchGroup createSceneGraph() {

        BranchGroup branchG0 = new BranchGroup();

        //背景色の設定（設定が無い場合は黒）
        Background background = new Background(new Color3f(0.3f, 0.3f, 0.3f));
        background.setApplicationBounds(bounds);
        branchG0.addChild(background);

        //マウス操作用のノード
        TransformGroup transG0 = new TransformGroup();
        branchG0.addChild(transG0);

        //Appearanceを作成
        Appearance ap = new Appearance();
        ColoringAttributes ca = new ColoringAttributes();
        ca.setColor(new Color3f( 0.0f, 0.0f, 1.0f));
        ap.setColoringAttributes(ca);

        //テクスチャ
        java.net.URL texFile = null;
        try{
            texFile = new java.net.URL(getCodeBase().toString() +
                       "diamond32.gif");
        }catch(java.net.MalformedURLException ex){
            System.out.println(ex.getMessage());
        }
        TextureLoader loader = new TextureLoader(texFile, this);
        ap.setTexture(loader.getTexture());

        //テクスチャ属性
        texAttrib = new TextureAttributes();
        texAttrib.setTextureMode(TextureAttributes.REPLACE);     //REPLACE
        texAttrib.setTextureBlendColor(1.0f, 1.0f, 0.0f, 1.0f);  //BLEND色（黄）
        ap.setTextureAttributes(texAttrib);

        //四角形ポリゴンの頂点座標・テクスチャ座標設定
        Point3f[] vertex = new Point3f[4];
        vertex[0] = new Point3f(  0.7f,  0.7f, 0.0f);
        vertex[1] = new Point3f( -0.7f,  0.7f, 0.0f);
        vertex[2] = new Point3f( -0.7f, -0.7f, 0.0f);
        vertex[3] = new Point3f(  0.7f, -0.7f, 0.0f);
        TexCoord2f[] texCoord = new TexCoord2f[4];
        texCoord[0] = new TexCoord2f( 5.0f, 5.0f);
        texCoord[1] = new TexCoord2f( 0.0f, 5.0f);
        texCoord[2] = new TexCoord2f( 0.0f, 0.0f);
        texCoord[3] = new TexCoord2f( 5.0f, 0.0f);
        //四角形ポリゴンの生成
        QuadArray quadA
            = new QuadArray(vertex.length,
                GeometryArray.COORDINATES | GeometryArray.TEXTURE_COORDINATE_2);
        quadA.setCoordinates(0, vertex);
        quadA.setTextureCoordinates(0, 0, texCoord);
        Shape3D quad3D = new Shape3D(quadA, ap);
        transG0.addChild(quad3D);

        //Capability設定
        texAttrib.setCapability(TextureAttributes.ALLOW_MODE_WRITE);

        //マウスによる物体移動
        transG0.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
        transG0.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        MouseZoom mouseZoom = new MouseZoom(transG0);
        mouseZoom.setSchedulingBounds(bounds);
        transG0.addChild(mouseZoom);

        branchG0.compile();

        return branchG0;
    }

    //GUIの作成
    private void createGUI(){

        radio = new CheckboxGroup();
        radio1 = new Checkbox("REPLACE", true, radio);
        radio2 = new Checkbox("MODULATE", false, radio);
        radio3 = new Checkbox("DECAL", false, radio);
        radio4 = new Checkbox("BLEND", false, radio);
        Panel panel = new Panel();
        panel.add(radio1);
        panel.add(radio2);
        panel.add(radio3);
        panel.add(radio4);
        radio1.addItemListener(this);
        radio2.addItemListener(this);
        radio3.addItemListener(this);
        radio4.addItemListener(this);
        add(panel, BorderLayout.SOUTH);
    }

    //ラジオボタンイベント処理
    public void itemStateChanged(ItemEvent e){

        if(e.getItemSelectable()==radio1){
            texAttrib.setTextureMode(TextureAttributes.REPLACE);
        }else if(e.getItemSelectable()==radio2){
            texAttrib.setTextureMode(TextureAttributes.MODULATE);
        }else if(e.getItemSelectable()==radio3){
            texAttrib.setTextureMode(TextureAttributes.DECAL);
        }else if(e.getItemSelectable()==radio4){
            texAttrib.setTextureMode(TextureAttributes.BLEND);
        }
    }

    public void destroy(){

        simpleU.cleanup();
    }

    public static void main(String[] args){    //Application

        MainFrame frame = new MainFrame(new Ja74(), 512, 512);
    }
}